[jdk11u-dev] RFR: 8218133: sun/net/www/protocol/http/ProtocolRedirect.java failed with "java.net.ConnectException"

[Goetz Lindenmaier]

I backport this for parity with 11.0.19-oracle.

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Commit messages:
 - Backport d176e208985f55745a60fc806dfb369a2cce0781

Changes: https://git.openjdk.org/jdk11u-dev/pull/1722/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1722&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8218133
  Stats: 46 lines in 1 file changed: 23 ins; 4 del; 19 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1722.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1722/head:pull/1722

PR: https://git.openjdk.org/jdk11u-dev/pull/1722